Extended Object Tcl (for short: XOTcl) is an object-oriented scripting language based on Tcl. It was originally designed for providing language support for design patterns and provides novel constructs such as filters or transitive mixin classes.

muhttpd is a simple but complete web server written in portable ANSI C, supporting logging, CGI scripts, MIME type based handlers, and HTTPS. It has been tested on various Unix environments on 32-bit, 64-bit, little endian and big endian systems.

A Wikipedia bot (a computer program designed to make automated edits to Wikipedia). It is written in Standard C - C99 - using the standard libraries and libcurl.
This project has not met its long-term goals, and has been abandoned.

User-union is a set of programs for POSIX/Unix/Linux systems that lets you have "union mounts" without special privilege. The result: change requests in one directory are actually performed in a separate parallel directory instead.

The Operating System Colour Management System Oyranos is intented to coordinate device informations (ICC colour profiles) and configure their system wide usage. Target is a predictable path for applications and users to match colours across devices.

LuaDist is a CMake built module distribution and deployment tool for the Lua programming language. It aims to achieve zero configuration runtime environment for Lua modules and libraries be it source or binary.